Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 722	$ 728	$ 2,261	$ 1,923
Siding
Disaggregation of Revenue [Line Items]
Net sales	420	345	1,196	996
OSB
Disaggregation of Revenue [Line Items]
Net sales	253	335	917	754
LPSA
Disaggregation of Revenue [Line Items]
Net sales	47	45	140	153
Other
Disaggregation of Revenue [Line Items]
Net sales	2	4	7	21
Value-add
Disaggregation of Revenue [Line Items]
Net sales	599	560	1,833	1,552
Value-add | Siding
Disaggregation of Revenue [Line Items]
Net sales	418	342	1,190	989
Value-add | OSB
Disaggregation of Revenue [Line Items]
Net sales	136	174	507	412
Value-add | LPSA
Disaggregation of Revenue [Line Items]
Net sales	46	44	136	151
Value-add | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Value-add | Siding Solutions
Disaggregation of Revenue [Line Items]
Net sales	423	347	1,207	1,008
Value-add | Siding Solutions | Siding
Disaggregation of Revenue [Line Items]
Net sales	418	342	1,190	989
Value-add | Siding Solutions | OSB
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Value-add | Siding Solutions | LPSA
Disaggregation of Revenue [Line Items]
Net sales	6	5	17	19
Value-add | Siding Solutions | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Value-add | OSB - Structural Solutions
Disaggregation of Revenue [Line Items]
Net sales	175	213	626	544
Value-add | OSB - Structural Solutions | Siding
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Value-add | OSB - Structural Solutions | OSB
Disaggregation of Revenue [Line Items]
Net sales	136	174	507	412
Value-add | OSB - Structural Solutions | LPSA
Disaggregation of Revenue [Line Items]
Net sales	40	40	119	132
Value-add | OSB - Structural Solutions | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Commodity | OSB - commodity
Disaggregation of Revenue [Line Items]
Net sales	112	157	395	332
Commodity | OSB - commodity | Siding
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Commodity | OSB - commodity | OSB
Disaggregation of Revenue [Line Items]
Net sales	112	157	395	332
Commodity | OSB - commodity | LPSA
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Commodity | OSB - commodity | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Other | Other products
Disaggregation of Revenue [Line Items]
Net sales	11	11	33	39
Other | Other products | Siding
Disaggregation of Revenue [Line Items]
Net sales	3	2	7	7
Other | Other products | OSB
Disaggregation of Revenue [Line Items]
Net sales	5	5	15	9
Other | Other products | LPSA
Disaggregation of Revenue [Line Items]
Net sales	1	0	4	2
Other | Other products | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 4	$ 7	$ 21